Photo: Veillg1 · CC0Wet weather: 1,178 mm of rain and snow a year falls on Lachute, more than on 88% of Canadian towns
Sunny July days climb to about 26.5°C. Winter nights are cold: in January they are colder than in 67% of Canadian towns. Of all months, October brings the most precipitation and February the least. An umbrella or a shovel earns its place on about 143 days a year with 1 mm or more.
Measured at Lachute, 0.9 km east: ECCC’s normals for 1991–2020.
A year in Lachute at a glance
Each month’s typical high and low, in °C.
What stands out about Lachute’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Lachute feels like
Each season’s and each month’s usual high and low, 1991–2020.
About 159 frosts and 115 warm days a year
The frost season runs October to May, and January freezes nearly every night. On about 19 nights a year the air falls below −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
1,178 mm of precipitation in a typical year
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 218 cm of snow a year
Snow falls from October to April, most of all in January (about 56 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Lachute
93% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Measured against 18°C: each day’s shortfall in mean temperature, added over twelve months.
Living with Lachute’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Seedlings can go out once the average last frost, around 12 May, has passed; autumn’s first, near 3 October, ends a season of about 143 days.
Highs of 17–27°C with nights of 8°C or more come in Jun, Jul, Aug and Sep.
Parks & trails →The normals describe a typical year, not its worst days; the hazards page covers Lachute’s.
Flood & hazards →ECCC’s normals location: Lachute
The page’s figures are ECCC’s 1991–2020 normals for Lachute, one of its 450 normals locations.
| Distance from the town | 0.9 km east |
| Station altitude | 91 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −36.0°C |
| Hottest reading, 1991–2020 | 36.0°C |
| Next-nearest location | Montréal Trudeau (Airport), 50 km |
How Lachute compares
Placed among 2,611 Canadian towns and neighbourhoods of 2,500+, each on its nearest normals location; each dot is another location used in Quebec.
Nearby towns’ climate
Places around Lachute whose figures come from another normals location. The nearest place to Lachute with figures is 28 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Lachute | 26.5°C | −14.7°C | 1,178 mm |
| Oka 28 km · Montréal Trudeau (Airport) | 26.7°C about the same | −13.5°C 1.2°C milder | 1,041 mm |
Lachute weather by month
Average daily high and low, mean temperature, rain and snow (as water) and snowfall by month, 1991–2020.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −5.5°C | −14.7°C | −10.2°C | 97 mm | 56 cm |
| February | −3.6°C | −13.6°C | −8.3°C | 72 mm | 47 cm |
| March | 2.4°C | −7.2°C | −2.5°C | 74 mm | 34 cm |
| April | 11.0°C | 0.5°C | 5.9°C | 100 mm | 8 cm |
| May | 19.4°C | 7.4°C | 13.3°C | 89 mm | 0 cm |
| June | 24.1°C | 12.6°C | 18.4°C | 111 mm | 0 cm |
| July | 26.5°C | 15.1°C | 20.5°C | 112 mm | 0 cm |
| August | 25.4°C | 14.3°C | 19.8°C | 104 mm | 0 cm |
| September | 20.8°C | 9.9°C | 15.4°C | 114 mm | 0 cm |
| October | 12.8°C | 3.7°C | 8.4°C | 120 mm | 2 cm |
| November | 5.2°C | −2.3°C | 1.6°C | 93 mm | 17 cm |
| December | −1.9°C | −9.5°C | −6.0°C | 94 mm | 53 cm |
| Year | 11.4°C | 1.4°C | 6.4°C | 1,178 mm | 218 cm |
The month with the widest range: March, −30.5°C to 26.5°C
Two years in three, January’s average falls within 3.2°C of its normal of −10.2°C; August keeps to within 1.0°C.
Where Lachute’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Lachute (the closest location with all twelve months of temperatures).
- Comparisons: Canadian towns and neighbourhoods of at least 2,500, each placed by its nearest location (city totals and reserves excluded).
- Not on this page: sunshine, absent from every 1991–2020 location, and an altitude correction, for want of the town’s own elevation.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Lachute’s climate
How warm does Lachute get in summer?
At its warmest, in July, the normal high is 26.5°C.
How cold does Lachute get in winter?
A typical January night falls to −14.7°C, the year’s low point.
How much rain and snow does Lachute get?
1,178 mm a year counting snow as water. The wettest month is October (120 mm); the driest, February (72 mm).
How long does snow stay on the ground?
The ground is white, with 1 cm or more, on some 128 days a year.
Are these figures for Lachute itself?
Yes. They were measured in Lachute, at ECCC’s own station there.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Lachute →
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).